diff --git a/src/models/meta/MetaDependencyTermVariable.java b/src/models/meta/MetaDependencyTermVariable.java
new file mode 100644
index 0000000..02b184e
--- /dev/null
+++ b/src/models/meta/MetaDependencyTermVariable.java
@@ -0,0 +1,11 @@
+package models.meta;
+
+import models.algebra.Symbol;
+
+public class MetaDependencyTermVariable extends MetaRDLTerm {
+
+	public MetaDependencyTermVariable(int order) {
+		super(new Symbol(":", 3), order, MetaRDLTerm.TermType.META_DEPENDENCY_TERM_VARIABLE);
+	}
+
+}
diff --git a/src/models/meta/MetaDependencyVariable.java b/src/models/meta/MetaDependencyVariable.java
new file mode 100644
index 0000000..aa48210
--- /dev/null
+++ b/src/models/meta/MetaDependencyVariable.java
@@ -0,0 +1,11 @@
+package models.meta;
+
+import models.algebra.Symbol;
+
+public class MetaDependencyVariable extends MetaRDLTerm {
+
+	public MetaDependencyVariable(int order) {
+		super(new Symbol(":", 2), order, MetaRDLTerm.TermType.META_DEPENDENCY_VARIABLE);
+	}
+
+}
diff --git a/src/models/meta/MetaRDLTerm.java b/src/models/meta/MetaRDLTerm.java
new file mode 100644
index 0000000..d7351a0
--- /dev/null
+++ b/src/models/meta/MetaRDLTerm.java
@@ -0,0 +1,88 @@
+package models.meta;
+
+import lombok.Getter;
+import models.Dependency;
+import models.EvaluatableTerm;
+import models.RDLTerm;
+import models.ResourceVariable;
+import models.algebra.Symbol;
+
+@Getter
+public class MetaRDLTerm extends RDLTerm {
+
+	protected static enum TermType {
+		META_DEPENDENCY,
+		META_DEPENDENCY_VARIABLE,
+		META_DEPENDENCY_TERM,
+		META_DEPENDENCY_TERM_VARIABLE,
+		META_EVALUATABLE_TERM_VARIABLE,
+		META_RESOURCE_VARIABLE;
+	}
+	
+	protected TermType termType;
+	
+	protected MetaRDLTerm(Symbol symbol, int order, TermType termType) {
+		super(symbol, order);
+		this.termType = termType;
+	}
+	
+	//dependency
+	public MetaRDLTerm(RDLTerm dependingTerm, MetaResourceVariable dependedVariable) {
+		super(new Symbol(":", 2), dependedVariable.getOrder());
+		addChild(dependingTerm);
+		addChild(dependedVariable);
+		this.termType = TermType.META_DEPENDENCY;
+	}
+	
+	public MetaRDLTerm(MetaRDLTerm dependingTerm, ResourceVariable dependedVariable) {
+		super(new Symbol(":", 2), dependedVariable.getOrder());
+		addChild(dependingTerm);
+		addChild(dependedVariable);
+		this.termType = TermType.META_DEPENDENCY;
+	}
+	
+	//list type dependency
+	public MetaRDLTerm(MetaRDLTerm dependency) {
+		super(new Symbol(":", 1), dependency.getOrder() - 1);
+		addChild(dependency);
+		this.termType = TermType.META_DEPENDENCY;
+	}
+	
+	//dependency term
+	public MetaRDLTerm(Dependency dependency, MetaRDLTerm argumentVariable) {
+		super(
+			new Symbol(":", 3), 
+			dependency.getDependedVariable().getOrder() == argumentVariable.getOrder() 
+				? dependency.getDependedVariable().getOrder() 
+				: dependency.getDependedVariable().getOrder() - 1
+		);
+		addChild(dependency.getDependingTerm());
+		addChild(dependency.getDependedVariable());
+		addChild(argumentVariable);
+		this.termType = TermType.META_DEPENDENCY_TERM;
+	}
+	
+	public MetaRDLTerm(MetaRDLTerm dependency, EvaluatableTerm argumentVariable) {
+		super(
+			new Symbol(":", 3), 
+			((RDLTerm) dependency.getChild(1)).getOrder() == argumentVariable.getOrder() 
+				? ((RDLTerm) dependency.getChild(1)).getOrder()
+				: ((RDLTerm) dependency.getChild(1)).getOrder() - 1
+		);
+		addChild(dependency.getChild(0));
+		addChild(dependency.getChild(1));
+		addChild(argumentVariable);
+		this.termType = TermType.META_DEPENDENCY_TERM;
+	}
+
+	@Override
+	public String toString() {
+		return null;
+	}
+
+	@Override
+	public String toStringWithOrder() {
+		return null;
+	}
+
+}
diff --git a/src/models/meta/MetaResourceVariable.java b/src/models/meta/MetaResourceVariable.java
new file mode 100644
index 0000000..e849e85
--- /dev/null
+++ b/src/models/meta/MetaResourceVariable.java
@@ -0,0 +1,11 @@
+package models.meta;
+
+import models.algebra.Symbol;
+
+public class MetaResourceVariable extends MetaRDLTerm {
+
+	protected MetaResourceVariable(int order) {
+		super(new Symbol("", 0), order, MetaRDLTerm.TermType.META_RESOURCE_VARIABLE);
+	}
+
+}